Uber-rich Americans are collecting multiple residencies and citizenships for the same reason they diversify their stock portfolios—to hedge against risk in an unpredictable world, investment migration experts tell Forbes.The U.S. has replaced China as the largest market for clients seeking secondary or tertiary citizenships, Eric Major, CEO and chairman of the investment migration advisory firm Latitude World, told Forbes.Learn more about your ad choices. Visit megaphone.fm/adchoices